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United States Patent | 6,193,772 |
Wiefel | February 27, 2001 |
A self-propelled harvesting machine includes a drive engine, a cooler and a cooling fan preceded by a cooling-air cleaning device incorporating a filter for retaining dirt particles in the drawn-in cooling-air and also including a suction device for removing said dirt particles, and the cooling-air cleaning device being driven by means of an engageable drive means. One aspect is that the drive means is engaged in dependence on a value measured by sensors. The suction housing and/or the baffle plate is rotatable under gravity or by being motor driven, when the suction device is switched off, into a position covering a region associated with the lower part of the filter device.
Inventors: | Wiefel; Ute (Harsewinkel, DE) |
Assignee: | Claas Selbstfahrende Erntemaschinen GmbH (Harsewinkel, DE) |
Appl. No.: | 292439 |
Filed: | April 15, 1999 |
Current U.S. Class: | 55/283; 55/294; 55/301; 55/385.3; 55/467; 96/421 |
Intern'l Class: | B01D 029/66; B01D 035/143 |
Field of Search: | 55/283,302,301,385.3,295,296,297,294,467 96/400,401,420,421,FOR 170 460/100 |
4542785 | Sep., 1985 | Bagnall et al. | 55/385. |
5217512 | Jun., 1993 | Williams | 55/290. |
5595537 | Jan., 1997 | Jungemann et al. | |
Foreign Patent Documents | |||
0 079 399 B1 | Sep., 1996 | EP. |
Application 09/163,837 to Isfort et al having filing date Sep. 30, 1998. |